In December 2016, Amazon unveiled a high-tech, brick-and-mortar store where customers can swipe the “Amazon Go app to enter the store, take the products you want, and go! No lines, no checkout.”1 Engineers were able to “weave the most advanced” technology into “the very fabric of a store” so any given product is added to a customer’s virtual cart when picked up and deleted if put back.2
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Many people were told in biology class that some basic human traits reflect simple genetic principles. One example is how earlobes are attached. When I was in high school, our biology teacher told us...